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Haas Technical DocumentationEffective Date:
Lathe - Spindle - Replacement
Lathe - Spindle - Replacement - Removal
January, 1997 - June, 2011
NOTE: Ensure the turret and tailstock, if equipped, are in the home position.
Power off the machine before performing the following procedure.
Mini Lathe (ML): Remove the door, the coolant collector from the spindle, and the left front and left side en-
closure panels. Disconnect the air/oil lube lines that supply the spindle and the air closer.
1. Remove the chuck or collet nose from the lathe and the necessary covers to gain access to the spindle
assembly. ML: Remove the workholding device, air closer, adapter, and draw tube (by screwing it out).
Toolroom Lathe (TL): Remove sheetmetal panel from the left side of the machine casting. This will gain ac-
cess to the spindle motor and belt.
TL: Remove the belt from the spindle pulley. To do this loosen the three bolts on the motor mounting plate
in the belt so it can be removed from the pulley.
ML: Remove the belt from the drive pulley. Attach a hydraulic puller to the drive sprocket.
TL and ML: Remove the SHCS that secure the spindle front cap to the spindle housing and remove the
spindle cartridge from the motor end of the spindle housing.
2. Disconnect oil return hose and coolant drain hose from the hydraulic cylinder, and disconnect.the anti- rota-
tion bracket.
3. Loosen the hydraulic clamp and unclamp hoses from the hydraulic cylinder, then remove.
4. Loosen the SHCS from the adapter, and detach the hydraulic cylinder.
5. Loosen the SHCS on the inside of adapter, and detach from spindle shaft.